Electric switch



Aug. 4, 1925. 1,548,650

c. E. ANDERSON v ELECTRIC SWITCH Filed July 15, 1924 lllll l Fig.5.

INVENTOR.

CFIRL ERIC HNoERs ON BY M A TTORNEYS.

plate and is of sufiicient length to ermit its necessary rectilinear movement, w do at the same tlme limitin the extent thereof. The margin 48 of t e de ression 47 is straight, and forms a guide r the straight edge of the push plate 41 which is constantly held against this margin of the depresslon by the effort of the spring 36 exerted through the commutator.

The stem 45 of the push plate passes through a hollow bushing 49, the head 50 of which is engaged in appropriate recesses 51 at one end of the blocks 15 and 16, while a pair of clamping nuts 52 and 53 are threaded on the projecting stem of the bushing, and afford means not only for clamping the nipple in place, but also for clamping the switch in the fan base, canopy or other appropriate ,support. The screw connection between the stem 45 of the push bar and the lug 44 of the push plate 41, permits the removal of the stem 45 and nut 53, so that the bushing 49 may be passed through asmall diameter hole therein of sufficient size to accommodate the bushing.

To unite the blocks and hold the switch mechanism in assembled position, any suitable means may be employed, such as a rivet or bolt. For convenience I have here illustrated a pair of bolts 54 and 55 arranged at opposite corners of the switch body and piercing the blocks to engage nuts 56 seated 111%EP10P1lflt8 exterior recesses.

e operation of the switch mechanismwill be readily understood. In Figs. 2, 4 and 5 the switch is shown in closed-circuit position, the commutator 27 bridging the contacts 18 and 19, and the stem 45 of the actuator 41 pulled out. To open the switch the actuator is shifted rectilinearly by pushing the button 46 toward the switch ody. As the peaked cam 42of the actuator plate 41 travels to the left, it de resses the commutator, thus increasing t e stress of the spring 36. When the oak of the cam 42 passes the plane of t. e commutator, the stress of the s ring forces the commutator to travel rapid ly down the opposite incline of the actuator, and thus throws the commutator to o n-circuit osition against the wall 38 of t e switch 0 amber. A movement of the actuator restores the commutator to circuit-closing position.

The manufacture and assembly} of the switch parts is extremely simple. hus, the commutator and washer 35 may both be struck from sheet metal, and when assembled with the coil spring 36, form a selfoontained assembl unit which may be handled without anger of disenga ment or loss of the spring or washer. o assemble the parts the actuator plate 41 may be placed in the depremion 47 of block 15, the commutator straddled on the cam ed 'e thereof, and the washer 35 forced up tfie reverse the op stem 31 sufficiently to permit it to be seated upon the ledge 36. The block 16 may then be placed upon and secured to the block 15 to complete the assembly of the parts.

Various modifications in details of shape and construction will readily occur to those dealing with the structure which do not, however, depart from what I claim as my invention.

I claim- 1. An electric switch comprising a pair of insulatin blocks recessed on their ad'acent faces to Form a switch chamber, switc contacts arranged in said chamber but on opposite sides of the line of division therebetween, a commutator having a throw across said switch chamber and adapted to make and break connection between said contacts, a rectilinearly movable actuator slidably confined between the adjacent faces of said blocks and having a peaked cam in slidable engagement with the commutator, together with a spring engaging the commutator and pressing the latter against the peaked cam of the actuator to cause the throw of the commutator as the peak of the cam passes its point of engagement with the commutator on the displacement of the actuator.

2. An electric switch comprising a pair of insulating blocks recessed on their adjacent faces to form a switch chamber, switch contacts arranged in said chamber but on opposite sides of the line of division therebetween, a commutator having a throw across said switch chamber and adapted to make and break connection between said contacts, a rectilinearly movable actuator slidably. confined between the adjacent faces of said blocks and having a peaked cam in slidable engagement with the commutator, a push and pull rod detachably engaged with one end ofthe actuator for operating the latter, and a spring engaging the commutator to hold the latter against the cam of the actuator.

3. An electric switch comprising a pair of insulating blocks recessed on their adjacent iaces to form a switch chamberga wire terminal arranged on the outer face of each block and having an associated switch contact stra assing through the block into the switc c amber, but on opposite sides of the line of division between the blocks, a commutator arranged in the switch chamber and having a throw across the latter to make and break connection between the switch contacts, together with a rectilinearly displaceable actuator slidabl engaged between sed faces of the locks, and having a pea red cam engaging the commutator, and a spring pressing the latter against the cam.

4. In an electric switch, a pair of insulating blocks recessed on their adjacent faces to form a switch chamber. one of said,

wee,

blocks having a, shallow depression extending beyond opposite ends of the switch chamber, a flat metal rectilineefly movable actuator accommodated in said depression end having 212 peeked cam traversing the swiich chamber, together with a cemmutetor arranged in said switch chamber substaneee tisdiy at right angles $0 the actuator, and a spring pressing said eommutetor into engagement with the peaked cam.

In testimony whereof I have signed my name to this specification.

ERIC ANDERSON, 

